86180631 has 4 divisors (see below), whose sum is σ = 114907512. Its totient is φ = 57453752.

The previous prime is 86180579. The next prime is 86180641. The reversal of 86180631 is 13608168.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86180631 - 2⁷ = 86180503 is a prime.

It is a super-2 number, since 2×86180631² = 14854202319116322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86180592 and 86180601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86180641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14363436 + ... + 14363441.

It is an arithmetic number, because the mean of its divisors is an integer number (28726878).

Almost surely, 2^86180631 is an apocalyptic number.

86180631 is a deficient number, since it is larger than the sum of its proper divisors (28726881).

86180631 is a wasteful number, since it uses less digits than its factorization.

86180631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28726880.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 86180631 is about 9283.3523578500. The cubic root of 86180631 is about 441.7093135197.

Adding to 86180631 its reverse (13608168), we get a palindrome (99788799).

The spelling of 86180631 in words is "eighty-six million, one hundred eighty thousand, six hundred thirty-one".